135144442404 has 72 divisors (see below), whose sum is σ = 346802601600. Its totient is φ = 44368957632.

The previous prime is 135144442373. The next prime is 135144442417. The reversal of 135144442404 is 404244441531.

135144442404 is a `hidden beast` number, since 1 + 35 + 144 + 442 + 40 + 4 = 666.

135144442404 is digitally balanced in base 7, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 564997 + ... + 767795.

It is an arithmetic number, because the mean of its divisors is an integer number (4816702800).

Almost surely, 2^135144442404 is an apocalyptic number.

It is an amenable number.

135144442404 is an abundant number, since it is smaller than the sum of its proper divisors (211658159196).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

135144442404 is a wasteful number, since it uses less digits than its factorization.

135144442404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 203089 (or 203084 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 36.

Adding to 135144442404 its reverse (404244441531), we get a palindrome (539388883935).

The spelling of 135144442404 in words is "one hundred thirty-five billion, one hundred forty-four million, four hundred forty-two thousand, four hundred four".